Britain's Imperial War Museum is spearheading a crowdsourced effort to assemble the human stories of World War I.

One hundred years after World War I began, the memories of participants are mostly contained in old photos and memorabilia in the attic, and inscribed on tombstones across Europe. Now Britain's Imperial War Museum is trying to assemble the Great War's human stories at a digital memorial, Lives of the First World War (livesofthefirstworldwar.org).